Small lithium-manganese battery.
This small lithium cell is listed under manganese because, while everyone calls them "lithium batteries", they also have other elements in the electrolyte, in this case manganese dioxide.Source:Radio ShackContributor:Theodore GrayAcquired:2 April, 2009Text Updated:7 April, 2009Price: $5Size: 0.5"Purity: <50%